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Step * of Lemma same-parity_wf

∀[n,m:ℤ].  (same-parity(n;m) ∈ 𝔹)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[n,m:\mBbbZ{}].    (same-parity(n;m)  \mmember{}  \mBbbB{})


By

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Latex:
ProveWfLemma

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